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Types of Concentration techniques:
1. Mental techniques uses formal as a preservative and ether or ethyl acetate
as a extractor of fat and debris from faces after meditation to leave the parasites
i a sediment at the bottom of the tube after centrifugation. Advantages: Recovers
most ova, cysts and larvae, Morphology of most parasites is retained, Less risk
of infection from bacteria and viruses.
Disadvantages contains debris, Some parasites do not concentrate well,
Ether is flammable and formal is a irritant, Liquid faces do not concentrate well.
Flotation uses the high specific gravity of a solution to float the lighter ova and